Manufacturer Name: Burnham Boiler Product Number: 109620-01 OEM Part Number: 109620-01 Product Description: 1/2"Step Open N/G 0.7-3.5"W.C. Weight:2.08lbs/943.47g The Burnham Boiler 109620-01 is a step-open gas valve that is used in HVAC systems for natural gas boilers. It operates at a 24VAC power supply with a frequency of 50/60Hz. It also has a 1/2” NPT intake for a safe conn... https://www.partshnc.com/109620-01-burnham-new-yorker-12-step-open-ng-07-35-wc